Testing-plug.



PATENTED MAR-.31. 1903.

A. T. PFLUGH.

TESTING PLUG.

APPLICATION FILED mm: 1a, 1902.

lg egfor,

H0 MODEL.

UNITED STATES AUGUST T. PFLUGH, OF HOBOKEN,

NEW JERSEY, ASSIGNOR TO NEW JERSEY PLUMBING SPECIALTIES 00., OF HOBOKEN, NEW JERSEY.

TESTING-PLUG.

SPECIFICATION forming part of Letters Patent No. 724,396, dated March 31, 1903.

Application filed June 16, 1902.

To all whom it may concern:

Be it known that 1, AUGUST T. PFLUGH, a citizen of the United States, residing at Hoboken, in the county of Hudson and State of New Jersey, have invented a new and useful Testing-Plug, of which the following is a specification.

Thisinvention relates to testing-plugs such as are employed by plumbers in testing pipejoints to discover sand, blow-holes, or other defects in the pipe.

The present invention is an improvement on the testing-plug for which I secured Letters Patent under date of February 5, 1901, and numbered 667,333.

The object of the present invention is to improve the gripping-arms, clamping-screw, and plug defined by the said patent, whereby the device as a whole is rendered more effective and more easily and positively applied to position.

WVith these and other objects in view, as will appear as the nature of the invention is better understood, the same consists in the novel construction and combination of parts of a testing-plug as will be hereinafter fully described and claimed.

In the accompanying drawings, forming a part of this specification, and in which like numerals of reference indicate corresponding parts, there is illustrated one form of embodiment of the invention capable of carrying the same into practical operation, it being understood that the elements therein exhibited may be varied or changed as to shape, proportion,

and exact manner of assemblage without de-' parting from the spirit thereof.

In the drawings, Figure 1 is a view in elevation, partly in section, of a testing-plug constructed in accordance with the present invention. Fig. 2 is a view in plan thereof.

Referring to thedrawings, l designates the body portion of the clamp, the ends of which are bifurcated to form arms 2 and 3 at each end thereof. The extremities of the arms are projected inwardly toward each other,as shown at 4 and 5, and the inner sides of these extremities are slantedinwardly and downwardly, so that therelare formed twodownwardly-tapered sockets 6 and 7, having entering slots 8 and 9 between the opposed terminals of the arms Serial No. 111,988. (No model.)

1 and 3. Bottoms 10 for the sockets 6 and 7 connect the lower ends of the arms 2 and 3 in rear of the extremities 4 and 5.

In the central portion of the body 1 is an opening 11, in which is seated a jam-nut 12,

having a central threaded orifice which is engaged by the clamping-screw 13, the same being a length of pipe threaded into a socket in the plug let and constitutes a means for conveying a testing fluid to the interior of the pipeto be tested, thereby dispensing with the employment of an extra plug-hole for the purpose. The plug consists of a disk adapted to rest upon the flange at the end of a piece of pipe or upon a washer disposed between it and the end of the flange, as usual. The free ends of the gripping-arms 15 and 16 are inturned to present hooks 17 to engage with the flange of the pipe, and the upper ends of the said arms are each provided with a wedgeshaped head 18 to engage the sockets -6 and 7 of the body. Intermediate of their ends the arms are outwardly bowed to present shoulders 19, and engaging these shoulders are yokes or hooks 20, secured to the plug and operating to prevent the arms from slipping out of engagement with the pipe-flange when the clamp is being seated thereon, it being seen that the said yokes or hooks will positively limit the lateral movement of the said arms.

The jam-nut 12 is provided at its lower end with a head or flange 21 to bear against the under side of the body portion 1 and with a polygonal extension 22, projecting above the body portion and forming means for attachment with a wrench by which the grippingarms-may be forced against the pipe-flange, and thus seat the plug upon-the pipe. The

intermediate portion of the jam-nut presents a bearing that will positively check any tendency of rocking on the part of the body portion, so that the gripping-arms will be positively held in position until the plug is seated, after which a pipe or other conduit is connec'ted with the projecting end of the clamping-screw and the testing fluid is then forced through the screw and into the pipe.

It will be seen from theforegoing description that the manner of connection between the gripping-arms and body portion is the same as that covered by the patentabove re ferred to, and this form of connection is shown merely for the sake of convenience, it being understood that these parts may be otherwise associated and still be within the scope of the invention.

The device herein shown is a knockdown structure, its parts being ready of detachment, so as to occupy but small space in being carried about, and as the parts are made to standard gages they will be interchangeable, so that in the event of one or more parts being broken these may readily be supplied. Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent, is-

I 1. A device of the character specified, comprising gripping-arms having intermediate shoulders, a plug connected with the arms,

and yokes or books carried by the plug and engaging the shoulders.

2'. A device of the character specified, comprising a body, a pair of gripping-arms associated therewith and having intermediate shoulders, a jam-nut loosely mounted in the head, a plug, yokes or hooks carried by the plug and engaging the said shoulders, and a hollow clamping-screw passed through the jam-nut and connected with the plug.

3. A device of the character specified, comprising abody, a pair of gripping-arms detachably associated therewith and provided with intermediate shoulders,a jam-n ut loosely disposed within the body and having a head bearing against the under side thereof and its upper end extending above the head and provided with wrench engaging means, a plug, yokes or hooks carried by the plug and engaging the said shoulders, and a hollow clamping-screwengaging the nut and project- :ing into the plug.

In testimony that I claim the foregoing as my own I have hereto affixed my signature in the presence of two witnesses.

AUGUST T. PFLUGH. Witnesses:

HARRY J. CAFFARATA, THOMAS C. SPROUL. 

